NEW YORK (CBSNewYork/AP) — Rep. Gabrielle Giffords of Arizona was shot in the head Saturday. An aide was among six people killed and  18 others wounded when an assailant opened fire outside a grocery store as the Democratic lawmaker met with constituents, officials said.

LIVE VIDEO: CBS affiliate KOLD-TV’s coverage of the shooting

A 9-year-old child and federal judge were also among those fatally shot in the attack.

Hospital officials said Giffords had surgery and is currently in the intensive-care unit.  Dr. Peter Rhee, of University Medical Center, said he was optimistic about Giffords’ recovery.